Nikon D5 User Manual page 120

Image size for JPEG and TIFF images can be set by pressing the
T button and rotating the sub-command dial until the desired
option is displayed in the rear control panel. To choose the size of
NEF (RAW) images, use the Image size > NEF (RAW) option in the
photo shooting menu.
T button
d
A
Number of Exposures Remaining
Pressing the T button displays the number
of exposures remaining in the rear control panel.
The number of exposures remaining changes
with the option selected for image size.
A
The Image Size Menu
Image size for JPEG and TIFF images can also be
adjusted using the Image size > JPEG/TIFF
option in the photo shooting menu (0 307).
Small and medium sized NEF (RAW) images are
recorded in lossless compressed 12-bit format,
regardless of the options selected for NEF (RAW)
compression and NEF (RAW) bit depth in the
NEF (RAW) recording menu.
96
Sub-command dial Rear control panel
Rear control panel